package com.cong.包装类;

public class integer01 {
    public static void main(String[] args) {
        Integer integer = 100;
        System.out.println(integer);

        Integer integer1 = Integer.valueOf("100");
        System.out.println(integer1);

//        Integer integer2 = Integer.valueOf("abc");//NumberFormatException
//        System.out.println(integer2);
    }

    //打印hello world
}
